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Finding the Fourth Proportional to 79,187.80, 109,189.47 and 50,469.04

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Solution

The fourth proportional to 79,187.80, 109,189.47 and 50,469.04 is: 69,590.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,187.80 : 109,189.47 = 50,469.04 : x
  2. Step 2: Convert to fraction form
    79,187.80/109,189.47 = 50,469.04/x
  3. Step 3: Cross multiply
    79,187.80x = 109,189.47 × 50,469.04
  4. Step 4: Simplify right side
    79,187.80x = 5,510,687,729.01
  5. Step 5: Solve for x
    x = 5,510,687,729.01/79,187.80
  6. Step 6: Final answer
    x = 69,590.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.